Mounting Of Seals - SMC Networks C96N C Series Operation Manual

4-4-4. Mounting of seals

1) Rod seal, cushion seal (① and ⑤ in Fig. 18)
Installing directions of the seal are specified.
Apply grease all over the seal and inner surface of the bushing as shown in Fig. 19. If it is difficult to
apply grease due to a small bore size etc., use a precision screwdriver.
2) Piston seal (➁ in Fig. 18)
Install with care not to twist the piston seal. Apply grease to the seal groove and outer circumference
by rubbing grease into them as shown in Fig. 20.
3) Tube gasket (⑦ in Fig. 18)
Install with care not to twist the tube gasket.
Fig. 19. Rod seal
Fig. 21 Mounting of the rod seal and cushion seal
4) When the support brackets are replaced, use a hexagon wrench as specified below.
Bore size (mm)
32, 40
50, 63
Foot
80, 100
Other
5) When replacing the support brackets, the tie-rod nuts on the cylinder body will be loosened.
Mount the support brackets after tightening the tie-rod nuts at the specified tightening torque.
6) Trunnion type cylinder requires a mounting accuracy.
Since the axis of trunnion is not aligned with the axis of cylinder easily, the trunnion type cylinder
may lose the dimensional accuracy when it is disassembled or reassembled, leading to malfunction.
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C a u t i o n
Confirm that there is no problem in the operation and the air tightness after reassembly.
A little less
than 1 mm
Bolt
MB-32-48-C1247A
MB-50-48-C1249A
MB-80-48AC1251A
MB-80-48BC1251A
Fig. 22 Mounting of the piston seal
Hexagon wrench size
4
5
6
- 38 -
Fig. 20. Piston seal
Tightening torque (Nm)
4.8
10.4
18.2